April could understand Sophie's anger at losing her job. But at the end of the day, it was completely her own fault and she should not blame anyone else but herself. As for why she feels so hard done by in life April also had no idea why that was also her fault.
In this lifetime she had seized any opportunities that came her way and stayed positive. She never met Sophie in her past life so she wasn't sure what life she had led. But based on her character April didn't feel she would have ended up any better than she had now.
People always revealed their true colours eventually, that's why April was more cautious this time around who she could and would trust. So far she had made the right decisions.